﻿using App1.Common;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Runtime.InteropServices.WindowsRuntime;
using Windows.Foundation;
using Windows.Foundation.Collections;
using Windows.UI.Xaml;
using Windows.UI.Xaml.Controls;
using Windows.UI.Xaml.Controls.Primitives;
using Windows.UI.Xaml.Data;
using Windows.UI.Xaml.Input;
using Windows.UI.Xaml.Media;
using Windows.UI.Xaml.Navigation;
using App1.Model;
using App1.ViewModel;
using System.Net;
using System.ComponentModel;
using System.Collections.Specialized;
using System.Xml.Serialization;

// The Basic Page item template is documented at http://go.microsoft.com/fwlink/?LinkId=234237

namespace App1
{
    /// <summary>
    /// A basic page that provides characteristics common to most applications.
    /// </summary>
    public sealed partial class BasicPage1 : Page
    {

        private NavigationHelper navigationHelper;
        private ObservableDictionary defaultViewModel = new ObservableDictionary();

        /// <summary>
        /// This can be changed to a strongly typed view model.
        /// </summary>
        public ObservableDictionary DefaultViewModel
        {
            get { return this.defaultViewModel; }
        }

        /// <summary>
        /// NavigationHelper is used on each page to aid in navigation and 
        /// process lifetime management
        /// </summary>
        public NavigationHelper NavigationHelper
        {
            get { return this.navigationHelper; }
        }

        private MainViewModel MainView { get; set; }
        public BasicPage1()
        {
            this.InitializeComponent();
        
            this.navigationHelper = new NavigationHelper(this);
            this.navigationHelper.LoadState += navigationHelper_LoadState;
            this.navigationHelper.SaveState += navigationHelper_SaveState;
            this.MainView = new MainViewModel();
            pageTitle.Text = MainPage.title;
           
            this.DataContext = this.MainView;
        }
        private void ReadRss(IAsyncResult result)
        {
            HttpWebRequest request = result.AsyncState as HttpWebRequest;
            HttpWebResponse reponse = request.EndGetResponse(result) as HttpWebResponse;
            using (Stream stream = reponse.GetResponseStream())
            {

                XmlSerializer sertialiser = new XmlSerializer(typeof(Rss));
                Rss rss = (Rss)sertialiser.Deserialize(stream);
                Dispatcher.RunAsync(Windows.UI.Core.CoreDispatcherPriority.Normal, () =>
                {
                    this.MainView.CurrentRss = rss;
                });

            }
        }

        private void read(string url)
        {

            if (url != "")
               
            {
               // url = "http://vnexpress.net/rss/kinh-doanh.rss";
                HttpWebRequest request = HttpWebRequest.CreateHttp(url);
                request.BeginGetResponse(new AsyncCallback(ReadRss), request);
            }
        }


        private void ListBox_SelectionChanged(object sender, SelectionChangedEventArgs e)
        {
            if (ListNews.SelectedItem != null)
            {
                NewsItem selectedNews = ListNews.SelectedItem as NewsItem;
                string s = selectedNews.Link;


                /// s = s.Insert(7, "m.");
                web.Navigate(new Uri(s));

            }
        }

        private void Button_Click(string x)
        {

            switch (x)
            {
                case "Thoi_Su":
                    read("http://vnexpress.net/rss/thoi-su.rss");
                    break;
                case "Kinh_Te":
                    read("http://vnexpress.net/rss/kinh-doanh.rss");
                    break;
                case "Doi_Song":
                    read("http://vnexpress.net/rss/doi-song.rss");
                    break;
                case "Giai_Tri":
                    read("http://vnexpress.net/rss/giai-tri.rss");
                    break;

                case "The_Thao":
                    read("http://vnexpress.net/rss/the-thao.rss");
                    break;
                case "Cong_Dong":
                    read("http://vnexpress.net/rss/cong-dong.rss");
                    break;
                case "Khoa_Hoc":
                    read("http://vnexpress.net/rss/khoa-hoc.rss");
                    break;
                case "The_Gioi":
                    read("http://vnexpress.net/rss/the-gioi.rss");
                    break;
                case "Luat_Phap":
                    read("http://vnexpress.net/rss/phap-luat.rss");
                    break;
                case "Xe_Hoi":
                    read("http://vnexpress.net/rss/oto-xe-may.rss");
                    break;
                case "Du_Lich":
                    read("http://vnexpress.net/rss/du-lich.rss");
                    break;



            }
        }
        //private void btnTinNong_PointerPressed()
        //{
        //    read("http://vnexpress.net/rss/kinh-doanh.rss");
        //}
        /// <summary>
        /// Populates the page with content passed during navigation. Any saved state is also
        /// provided when recreating a page from a prior session.
        /// </summary>
        /// <param name="sender">
        /// The source of the event; typically <see cref="NavigationHelper"/>
        /// </param>
        /// <param name="e">Event data that provides both the navigation parameter passed to
        /// <see cref="Frame.Navigate(Type, Object)"/> when this page was initially requested and
        /// a dictionary of state preserved by this page during an earlier
        /// session. The state will be null the first time a page is visited.</param>
        private void navigationHelper_LoadState(object sender, LoadStateEventArgs e)
        {
           
            string s = MainPage.title; 
            Button_Click(s);
            pageTitle.Text = s;
        }

        /// <summary>
        /// Preserves state associated with this page in case the application is suspended or the
        /// page is discarded from the navigation cache.  Values must conform to the serialization
        /// requirements of <see cref="SuspensionManager.SessionState"/>.
        /// </summary>
        /// <param name="sender">The source of the event; typically <see cref="NavigationHelper"/></param>
        /// <param name="e">Event data that provides an empty dictionary to be populated with
        /// serializable state.</param>
        private void navigationHelper_SaveState(object sender, SaveStateEventArgs e)
        {
        }

       #region NavigationHelper registration

        /// The methods provided in this section are simply used to allow
        /// NavigationHelper to respond to the page's navigation methods.
        /// 
        /// Page specific logic should be placed in event handlers for the  
        /// <see cref="GridCS.Common.NavigationHelper.LoadState"/>
        /// and <see cref="GridCS.Common.NavigationHelper.SaveState"/>.
        /// The navigation parameter is available in the LoadState method 
        /// in addition to page state preserved during an earlier session.

        protected override void OnNavigatedTo(NavigationEventArgs e)
        {
            navigationHelper.OnNavigatedTo(e);
        }

        protected override void OnNavigatedFrom(NavigationEventArgs e)
        {
            navigationHelper.OnNavigatedFrom(e);
        }

        #endregion
    }
}
